Bob Warfield

Recent Posts

Work Hardening & Strain Hardening - A Machinist’s Guide

What Does Strain Hardening or Work Hardening Mean?

Strain hardening, or work hardening as it is more often called, is the hardening of metal by plastic deformation.  It can be a problem or a benefit in metalworking.  Learn what it is and how to avoid or encourage it in this article.

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How to Machine Titanium [Tooling, Tips, and Techniques]

Discover how to machine titanium, it’s easier than you’d think, especially with CNC Cookbook's free checklist.

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Design & Manufacturing Tips from CNC Cookbook

These pages contain tips to be used in the design or manufacture of parts. They’re time and cost savers designed to get the parts made as quickly and accurately as possible.

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How to Think Like a Machinist

Do you think like a machinist?  Not every CNC’er does.  If I had to guess, based on what I see out on the internet, a surprisingly large number don’t.  But it’s worth learning to think like a machinist.

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16 CNC Router Tips to Avoid Tearout & Splintering

We’ve all experienced CNC router tearout and splintering while cutting wood at some point.

Your CNC Router is sailing along in the cut, the part is just starting to emerge from the stock and it looks awesome.  Suddenly, you hear the noise change a bit and a big chunk is splintered or torn out.

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The Beginner's Complete Guide to Machinist Vises

A Machinist Vise (also called a Milling Vise) is probably the most popular workholding solution available for milling machines.

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